package com.kun.comic.fragment;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.app.Fragment;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.ColorFilter;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.kun.comic.adapter.NavigationDrawerAdapter;
import com.kun.comic.extra.NavigationDrawerCallbacks;
import com.kun.comic.model.NavigationItem;
import com.kun.comic.R;

/**
 * Fragment used for managing interactions for and presentation of a navigation
 * drawer. See the <a href=
 * "https://developer.android.com/design/patterns/navigation-drawer.html#Interaction"
 * > design guidelines</a> for a complete explanation of the behaviors
 * implemented here.
 */
public class NavigationDrawerFragment extends Fragment implements
		NavigationDrawerCallbacks {

	/**
	 * Remember the position of the selected item.
	 */
	private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";

	/**
	 * Per the design guidelines, you should show the drawer on launch until the
	 * user manually expands it. This shared preference tracks this.
	 */
	private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";

	/**
	 * A pointer to the current callbacks instance (the Activity).
	 */
	private NavigationDrawerCallbacks mCallbacks;

	/**
	 * Helper component that ties the action bar to the navigation drawer.
	 */
	private ActionBarDrawerToggle mActionBarDrawerToggle;

	private DrawerLayout mDrawerLayout;
	private RecyclerView mDrawerList;
	private View mFragmentContainerView;

	private int mCurrentSelectedPosition = 0;
	private boolean mFromSavedInstanceState;
	private boolean mUserLearnedDrawer;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		// Read in the flag indicating whether or not the user has demonstrated
		// awareness of the
		// drawer. See PREF_USER_LEARNED_DRAWER for details.
		SharedPreferences sp = PreferenceManager
				.getDefaultSharedPreferences(getActivity());
		mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);

		if (savedInstanceState != null) {
			mCurrentSelectedPosition = savedInstanceState
					.getInt(STATE_SELECTED_POSITION);
			mFromSavedInstanceState = true;
		}
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		View view = inflater.inflate(R.layout.fragment_navigation_drawer,
				container, false);
		mDrawerList = (RecyclerView) view.findViewById(R.id.drawerList);
		LinearLayoutManager layoutManager = new LinearLayoutManager(
				getActivity());
		layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
		mDrawerList.setLayoutManager(layoutManager);
		mDrawerList.setHasFixedSize(true);

		final List<NavigationItem> navigationItems = getMenu();
		NavigationDrawerAdapter adapter = new NavigationDrawerAdapter(
				navigationItems);
		adapter.setNavigationDrawerCallbacks(this);
		mDrawerList.setAdapter(adapter);
		selectItem(mCurrentSelectedPosition);
		return view;
	}

	public boolean isDrawerOpen() {
		return mDrawerLayout != null
				&& mDrawerLayout.isDrawerOpen(mFragmentContainerView);
	}

	public ActionBarDrawerToggle getActionBarDrawerToggle() {
		return mActionBarDrawerToggle;
	}

	public DrawerLayout getDrawerLayout() {
		return mDrawerLayout;
	}

	@Override
	public void onNavigationDrawerItemSelected(int position) {
		selectItem(position);
	}

	public List<NavigationItem> getMenu() {
		List<NavigationItem> items = new ArrayList<NavigationItem>();
		items.add(new NavigationItem("Home", getResources().getDrawable(
				R.drawable.ic_launcher)));
		items.add(new NavigationItem("One piece", getResources().getDrawable(
				R.drawable.ic_launcher)));
		items.add(new NavigationItem("Hiệp khách giang hồ", getResources()
				.getDrawable(R.drawable.ic_launcher)));
		items.add(new NavigationItem("Long phi bất bại P2", getResources()
				.getDrawable(R.drawable.ic_launcher)));
		items.add(new NavigationItem("Naruto", getResources().getDrawable(
				R.drawable.ic_launcher)));
		items.add(new NavigationItem("Onepunch-Man", getResources()
				.getDrawable(R.drawable.ic_launcher)));
		items.add(new NavigationItem("Conan", getResources().getDrawable(
				R.drawable.ic_launcher)));
		items.add(new NavigationItem("Fairy tail", getResources().getDrawable(
				R.drawable.ic_launcher)));
		items.add(new NavigationItem("Doremon", getResources().getDrawable(
				R.drawable.ic_launcher)));
		items.add(new NavigationItem("Ô long viện 2", getResources()
				.getDrawable(R.drawable.ic_launcher)));
		return items;
	}

	/**
	 * Users of this fragment must call this method to set up the navigation
	 * drawer interactions.
	 * 
	 * @param fragmentId
	 *            The android:id of this fragment in its activity's layout.
	 * @param drawerLayout
	 *            The DrawerLayout containing this fragment's UI.
	 * @param toolbar
	 *            The Toolbar of the activity.
	 */
	public void setup(int fragmentId, DrawerLayout drawerLayout, Toolbar toolbar) {
		mFragmentContainerView = getActivity().findViewById(fragmentId);
		mDrawerLayout = drawerLayout;

		mDrawerLayout.setStatusBarBackgroundColor(getResources().getColor(
				R.color.myPrimaryDarkColor));

		mActionBarDrawerToggle = new ActionBarDrawerToggle(getActivity(),
				mDrawerLayout, toolbar, R.string.drawer_open,
				R.string.drawer_close) {
			@Override
			public void onDrawerClosed(View drawerView) {
				super.onDrawerClosed(drawerView);
				if (!isAdded())
					return;

				getActivity().invalidateOptionsMenu(); // calls
														// onPrepareOptionsMenu()
			}

			@Override
			public void onDrawerOpened(View drawerView) {
				super.onDrawerOpened(drawerView);
				if (!isAdded())
					return;
				if (!mUserLearnedDrawer) {
					mUserLearnedDrawer = true;
					SharedPreferences sp = PreferenceManager
							.getDefaultSharedPreferences(getActivity());
					sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true)
							.apply();
				}
				getActivity().invalidateOptionsMenu(); // calls
														// onPrepareOptionsMenu()
			}
		};

		// If the user hasn't 'learned' about the drawer, open it to introduce
		// them to the drawer,
		// per the navigation drawer design guidelines.
		if (!mUserLearnedDrawer && !mFromSavedInstanceState) {
			mDrawerLayout.openDrawer(mFragmentContainerView);
		}

		// Defer code dependent on restoration of previous instance state.
		mDrawerLayout.post(new Runnable() {
			@Override
			public void run() {
				mActionBarDrawerToggle.syncState();
			}
		});

		mDrawerLayout.setDrawerListener(mActionBarDrawerToggle);
	}

	private void selectItem(int position) {
		mCurrentSelectedPosition = position;
		if (mDrawerLayout != null) {
			mDrawerLayout.closeDrawer(mFragmentContainerView);
		}
		if (mCallbacks != null) {
			mCallbacks.onNavigationDrawerItemSelected(position);
		}
		((NavigationDrawerAdapter) mDrawerList.getAdapter())
				.selectPosition(position);
	}

	public void openDrawer() {
		mDrawerLayout.openDrawer(mFragmentContainerView);
	}

	public void closeDrawer() {
		mDrawerLayout.closeDrawer(mFragmentContainerView);
	}

	@Override
	public void onAttach(Activity activity) {
		super.onAttach(activity);
		try {
			mCallbacks = (NavigationDrawerCallbacks) activity;
		} catch (ClassCastException e) {
			throw new ClassCastException(
					"Activity must implement NavigationDrawerCallbacks.");
		}
	}

	@Override
	public void onDetach() {
		super.onDetach();
		mCallbacks = null;
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
		super.onSaveInstanceState(outState);
		outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
	}

	@Override
	public void onConfigurationChanged(Configuration newConfig) {
		super.onConfigurationChanged(newConfig);
		// Forward the new configuration the drawer toggle component.
		mActionBarDrawerToggle.onConfigurationChanged(newConfig);
	}

	// public void setUserData(String user, String email, Bitmap avatar) {
	// ImageView avatarContainer = (ImageView) mFragmentContainerView
	// .findViewById(R.id.imgAvatar);
	// ((TextView) mFragmentContainerView.findViewById(R.id.txtUserEmail))
	// .setText(email);
	// ((TextView) mFragmentContainerView.findViewById(R.id.txtUsername))
	// .setText(user);
	// avatarContainer.setImageDrawable(new RoundImage(avatar));
	// }

	public View getGoogleDrawer() {
		return mFragmentContainerView.findViewById(R.id.googleDrawer);
	}

	public static class RoundImage extends Drawable {
		private final Bitmap mBitmap;
		private final Paint mPaint;
		private final RectF mRectF;
		private final int mBitmapWidth;
		private final int mBitmapHeight;

		public RoundImage(Bitmap bitmap) {
			mBitmap = bitmap;
			mRectF = new RectF();
			mPaint = new Paint();
			mPaint.setAntiAlias(true);
			mPaint.setDither(true);
			final BitmapShader shader = new BitmapShader(bitmap,
					Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
			mPaint.setShader(shader);

			mBitmapWidth = mBitmap.getWidth();
			mBitmapHeight = mBitmap.getHeight();
		}

		@Override
		public void draw(Canvas canvas) {
			canvas.drawOval(mRectF, mPaint);
		}

		@Override
		protected void onBoundsChange(Rect bounds) {
			super.onBoundsChange(bounds);
			mRectF.set(bounds);
		}

		@Override
		public void setAlpha(int alpha) {
			if (mPaint.getAlpha() != alpha) {
				mPaint.setAlpha(alpha);
				invalidateSelf();
			}
		}

		@Override
		public void setColorFilter(ColorFilter cf) {
			mPaint.setColorFilter(cf);
		}

		@Override
		public int getOpacity() {
			return PixelFormat.TRANSLUCENT;
		}

		@Override
		public int getIntrinsicWidth() {
			return mBitmapWidth;
		}

		@Override
		public int getIntrinsicHeight() {
			return mBitmapHeight;
		}

		public void setAntiAlias(boolean aa) {
			mPaint.setAntiAlias(aa);
			invalidateSelf();
		}

		@Override
		public void setFilterBitmap(boolean filter) {
			mPaint.setFilterBitmap(filter);
			invalidateSelf();
		}

		@Override
		public void setDither(boolean dither) {
			mPaint.setDither(dither);
			invalidateSelf();
		}

		public Bitmap getBitmap() {
			return mBitmap;
		}

	}
}
